Seimic analysis of Carboniferous rift basin and Triassic growth
... related lenticular basins. The interpretation of lines from Eastern Svalbard focus on a series of Triassic, shallow basins (< 200 m; up to 150 ms deep) of which most are bound by listric faults that sole out in underlying shale successions. These observations are correlated with similar faulting wit ...
... related lenticular basins. The interpretation of lines from Eastern Svalbard focus on a series of Triassic, shallow basins (< 200 m; up to 150 ms deep) of which most are bound by listric faults that sole out in underlying shale successions. These observations are correlated with similar faulting wit ...
S-Velocity Structure of the Upper Mantle
... event and lie roughly along the same great-circle path. The resulting phase anomaly is assigned to the inter-station path. This is done for all events, and data comprised of the median measurement for each path are inverted to obtain a velocity map at a given period. These results can be further imp ...
... event and lie roughly along the same great-circle path. The resulting phase anomaly is assigned to the inter-station path. This is done for all events, and data comprised of the median measurement for each path are inverted to obtain a velocity map at a given period. These results can be further imp ...
Global scale models of the mantle flow field predicted by synthetic
... method may be subject to scaling errors that arise from imperfect or insufficient mineral physics data. Although it is possible to use self-consistent thermodynamic calculations (e.g., Stixrude and Lithgow-Bertelloni, 2005) to derive temperature-, pressureand compositional-dependent seismic wavespeed ...
... method may be subject to scaling errors that arise from imperfect or insufficient mineral physics data. Although it is possible to use self-consistent thermodynamic calculations (e.g., Stixrude and Lithgow-Bertelloni, 2005) to derive temperature-, pressureand compositional-dependent seismic wavespeed ...
The Moho - EarthByte
... Based on later results from earthquake seismology and controlledsourced seismology (the seismic wide-angle technique) it is generally accepted that the Moho is present beneath both continental and oceanic crust. It is identified as a first order discontinuity where the seismic P-wave velocity increase ...
... Based on later results from earthquake seismology and controlledsourced seismology (the seismic wide-angle technique) it is generally accepted that the Moho is present beneath both continental and oceanic crust. It is identified as a first order discontinuity where the seismic P-wave velocity increase ...
Possible stress states adjacent to the rupture
... mechanisms can only tally with few aftershocks and disagree with the region stress field (Fig. 1b). Therefore, we conclude that the maximum stress is close to horizontal and should be NW–SE directed. According to the discussion above, we knew the maximum stress before Chi-Chi earthquake is aligned wi ...
... mechanisms can only tally with few aftershocks and disagree with the region stress field (Fig. 1b). Therefore, we conclude that the maximum stress is close to horizontal and should be NW–SE directed. According to the discussion above, we knew the maximum stress before Chi-Chi earthquake is aligned wi ...
Tsunami *
... the seafloor or disruption of any body of standing water. Tsunami are sometimes called "seismic sea waves", although, as we will see, they can be generated by mechanisms other than earthquakes. Tsunami have also been called "tidal waves", but this term should not be used because they are not in any ...
... the seafloor or disruption of any body of standing water. Tsunami are sometimes called "seismic sea waves", although, as we will see, they can be generated by mechanisms other than earthquakes. Tsunami have also been called "tidal waves", but this term should not be used because they are not in any ...
Crustal structure of the central Sunda margin at the onset of oblique
... fold of 30. Processing included frequency filtering after amplitude balancing and trace editing of the shot gathers. A primary focus during data processing was multiple removal, which was performed in the frequency–wavenumber ( f–k) domain enabled by move-out differences between primary and multiple ...
... fold of 30. Processing included frequency filtering after amplitude balancing and trace editing of the shot gathers. A primary focus during data processing was multiple removal, which was performed in the frequency–wavenumber ( f–k) domain enabled by move-out differences between primary and multiple ...
Probabilistic prediction of rupture length, slip and
... relationship between seismic slip and rupture length. We find that the larger the present slip amplitude Dp , the higher is the probability for the continuation of a rupture and the evolution into a ‘Big One’, that is, a long remaining rupture length Lr (Yamada 2007). We also find that the Dp –Lr re ...
... relationship between seismic slip and rupture length. We find that the larger the present slip amplitude Dp , the higher is the probability for the continuation of a rupture and the evolution into a ‘Big One’, that is, a long remaining rupture length Lr (Yamada 2007). We also find that the Dp –Lr re ...
Mantle Discontinuities - Northwestern University
... continues p. Kennett, pers. comm., 19891 on a new radial Earth model (IASPR) to fit global body-wave travel times more closely than the currently-used radial model PREM [Dziewonski and Anderson, 19811 while retaining those features of PREM structure which provide a good fit to free oscillation data. ...
... continues p. Kennett, pers. comm., 19891 on a new radial Earth model (IASPR) to fit global body-wave travel times more closely than the currently-used radial model PREM [Dziewonski and Anderson, 19811 while retaining those features of PREM structure which provide a good fit to free oscillation data. ...
Tsunami - Library Junction
... Tsunami are sometimes referred to as tidal waves. In recent years, this term has fallen out of favor, especially in the scientific community, because tsunami actually have nothing to do with tides. The once-popular term derives from their most common appearance, which is that of an extraordinarily h ...
... Tsunami are sometimes referred to as tidal waves. In recent years, this term has fallen out of favor, especially in the scientific community, because tsunami actually have nothing to do with tides. The once-popular term derives from their most common appearance, which is that of an extraordinarily h ...
Practice 3rd Exam Ge..
... ____ 29. As a seismologist examining a seismogram, you would know that the third set of waves displayed ____________. a. would cause the most damage b. are S-waves c. are P-waves d. are an indication that the major earthquake is over and that the aftershocks have begun ____ 30. Seismometers, being a ...
... ____ 29. As a seismologist examining a seismogram, you would know that the third set of waves displayed ____________. a. would cause the most damage b. are S-waves c. are P-waves d. are an indication that the major earthquake is over and that the aftershocks have begun ____ 30. Seismometers, being a ...
Soil-gas radon monitoring in an active granite quarry from
... can be observed in these materials. The presence of such mineralization is usually easily recognized with the use of portable gamma-ray scintilometers, due to its superficial nature, and secondary phosphates can be macroscopically observed in the most intense ones. Indeed, the majority of the referr ...
... can be observed in these materials. The presence of such mineralization is usually easily recognized with the use of portable gamma-ray scintilometers, due to its superficial nature, and secondary phosphates can be macroscopically observed in the most intense ones. Indeed, the majority of the referr ...
Originally published as: Ivanova, A., Kashubin, A
... The post-stack processing, cross-calibration and analysis of the seismic volumes after step 24 (Table 2) was carried out using the interpretational software package Pro4D. The crosscalibration of the two stacked seismic cubes included cross-correlation, phase and time shifting, phase and frequency s ...
... The post-stack processing, cross-calibration and analysis of the seismic volumes after step 24 (Table 2) was carried out using the interpretational software package Pro4D. The crosscalibration of the two stacked seismic cubes included cross-correlation, phase and time shifting, phase and frequency s ...
Deliverable 3.2 - version 2 - Website for the dissemination of long
... complemented with the descriptions of the steps that the SHARE catalogue underwent since its first release in April 2011, which are briefly summarized in the following. 1. SHEEC was first released on 13 April 2011, as deliverable D3.2 of the Project. The catalogue was made available as two separate ...
... complemented with the descriptions of the steps that the SHARE catalogue underwent since its first release in April 2011, which are briefly summarized in the following. 1. SHEEC was first released on 13 April 2011, as deliverable D3.2 of the Project. The catalogue was made available as two separate ...
“Seismic Rehabilitation of Wood Diaphragms in Unreinforced
... masonry (URM) buildings found in the Central and Eastern portions of the United States. Specifically, there were two major objectives: (1) to assess the adequacy of current seismic guidelines for evaluating existing wood diaphragms in pre-1950’s URM buildings and for designing necessary retrofits; a ...
... masonry (URM) buildings found in the Central and Eastern portions of the United States. Specifically, there were two major objectives: (1) to assess the adequacy of current seismic guidelines for evaluating existing wood diaphragms in pre-1950’s URM buildings and for designing necessary retrofits; a ...
Characterizing the Main Himalayan Thrust in the Garhwal Himalaya
... thrust fault and zone of high ductile strain (cf. Searle et al., 2008). The upper boundary of this zone, sometimes called the MCT-II (Arita, 1983), is known locally in Garhwal as the Vaikrita Thrust (Valdiya, 1980). The lower boundary of this zone, correspondingly called the MCT-I, is known locally ...
... thrust fault and zone of high ductile strain (cf. Searle et al., 2008). The upper boundary of this zone, sometimes called the MCT-II (Arita, 1983), is known locally in Garhwal as the Vaikrita Thrust (Valdiya, 1980). The lower boundary of this zone, correspondingly called the MCT-I, is known locally ...
Juan de Fuca slab geometry and its relation to Wadati
... supplemented with hypocenters recorded by the Northern California Seismic System (NCSS) and the Pacific Northwest Seismic Network (PNSN), newly acquired verticalincidence, multichannel seismic reflection (MCS) profiles, wide-angle seismic reflection and refraction profiles, and a resistivity profile ...
... supplemented with hypocenters recorded by the Northern California Seismic System (NCSS) and the Pacific Northwest Seismic Network (PNSN), newly acquired verticalincidence, multichannel seismic reflection (MCS) profiles, wide-angle seismic reflection and refraction profiles, and a resistivity profile ...
The Promise of Elastic Anisotropy
... useful for detecting vertically aligned fractures. Any stress field can also produce TIH anisotropy if the two horizontal stresses are unequal in magnitude. Vertically traveling P waves by themselves cannot detect anisotropy, but by combining information from P waves traveling in more than one direc ...
... useful for detecting vertically aligned fractures. Any stress field can also produce TIH anisotropy if the two horizontal stresses are unequal in magnitude. Vertically traveling P waves by themselves cannot detect anisotropy, but by combining information from P waves traveling in more than one direc ...
Earthquake engineering
Earthquake engineering or Seismic engineering is a branch of engineering that searches for ways to make structures, such as buildings and bridges, resistant to earthquake damage. Earthquake engineer, better known as a seismic engineer aim to develop building techniques that will prevent any damage in a minor quake and avoid serious damage or collapse in a major shake. It is the scientific field concerned with protecting society, the natural environment, and the man-made environment from earthquakes by limiting the seismic risk to socio-economically acceptable levels. Traditionally, it has been narrowly defined as the study of the behavior of structures and geo-structures subject to seismic loading; it is considered as a subset of both structural and geotechnical engineering. However, the tremendous costs experienced in recent earthquakes have led to an expansion of its scope to encompass disciplines from the wider field of civil engineering, mechanical engineering and from the social sciences, especially sociology, political science, economics and finance. The main objectives of earthquake engineering are: Foresee the potential consequences of strong earthquakes on urban areas and civil infrastructure. Design, construct and maintain structures to perform at earthquake exposure up to the expectations and in compliance with building codes.A properly engineered structure does not necessarily have to be extremely strong or expensive. It has to be properly designed to withstand the seismic effects while sustaining an acceptable level of damage.